org.graylog2.plugin.inputs.transports.GeneratorTransport Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.plugin.inputs.transports;
import com.codahale.metrics.MetricSet;
import com.google.common.eventbus.EventBus;
import com.google.common.util.concurrent.AbstractExecutionThreadService;
import com.google.common.util.concurrent.Service;
import org.graylog2.plugin.configuration.Configuration;
import org.graylog2.plugin.configuration.ConfigurationRequest;
import org.graylog2.plugin.inputs.MessageInput;
import org.graylog2.plugin.inputs.MisfireException;
import org.graylog2.plugin.inputs.codecs.CodecAggregator;
import org.graylog2.plugin.journal.RawMessage;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class GeneratorTransport extends ThrottleableTransport {
private static final Logger log = LoggerFactory.getLogger(GeneratorTransport.class);
private Service generatorService;
public GeneratorTransport(EventBus eventBus, Configuration configuration) {
super(eventBus, configuration);
}
@Override
public void setMessageAggregator(CodecAggregator aggregator) {
}
protected abstract RawMessage produceRawMessage(MessageInput input);
@Override
public void doLaunch(final MessageInput input) throws MisfireException {
generatorService = new AbstractExecutionThreadService() {
@Override
protected void run() throws Exception {
while (isRunning()) {
if (isThrottled()) {
blockUntilUnthrottled();
}
final RawMessage rawMessage = GeneratorTransport.this.produceRawMessage(input);
if (rawMessage != null) {
input.processRawMessage(rawMessage);
}
}
}
};
generatorService.startAsync();
}
@Override
public void doStop() {
if (generatorService == null || !generatorService.isRunning()) {
log.error("Cannot stop generator transport, it isn't running.");
return;
}
log.debug("Stopping generator transport service {}", generatorService);
generatorService.stopAsync().awaitTerminated();
generatorService = null;
}
@Override
public MetricSet getMetricSet() {
return null;
}
public static class Config extends ThrottleableTransport.Config {
@Override
public ConfigurationRequest getRequestedConfiguration() {
return super.getRequestedConfiguration();
}
}
}